Add Xiaomi Miscale v1 and v2 (#1368)

2026-05-18 20:23:27 +02:00 · 2021-02-22 10:23:12 +01:00
parent 25924ca4e8
commit f81cddf22e
9 changed files with 363 additions and 0 deletions
@@ -0,0 +1,116 @@
+#include "xiaomi_miscale2.h"
+#include "esphome/core/log.h"
+
+#ifdef ARDUINO_ARCH_ESP32
+
+namespace esphome {
+namespace xiaomi_miscale2 {
+
+static const char *TAG = "xiaomi_miscale2";
+
+void XiaomiMiscale2::dump_config() {
+  ESP_LOGCONFIG(TAG, "Xiaomi Miscale2");
+  LOG_SENSOR("  ", "Weight", this->weight_);
+  LOG_SENSOR("  ", "Impedance", this->impedance_);
+}
+
+bool XiaomiMiscale2::parse_device(const esp32_ble_tracker::ESPBTDevice &device) {
+  if (device.address_uint64() != this->address_) {
+    ESP_LOGVV(TAG, "parse_device(): unknown MAC address.");
+    return false;
+  }
+  ESP_LOGVV(TAG, "parse_device(): MAC address %s found.", device.address_str().c_str());
+
+  bool success = false;
+  for (auto &service_data : device.get_service_datas()) {
+    auto res = parse_header(service_data);
+    if (!res.has_value()) {
+      continue;
+    }
+    if (!(parse_message(service_data.data, *res))) {
+      continue;
+    }
+    if (!(report_results(res, device.address_str()))) {
+      continue;
+    }
+    if (res->weight.has_value() && this->weight_ != nullptr)
+      this->weight_->publish_state(*res->weight);
+    if (res->impedance.has_value() && this->impedance_ != nullptr)
+      this->impedance_->publish_state(*res->impedance);
+    success = true;
+  }
+
+  return success;
+}
+
+optional<ParseResult> XiaomiMiscale2::parse_header(const esp32_ble_tracker::ServiceData &service_data) {
+  ParseResult result;
+  if (!service_data.uuid.contains(0x1B, 0x18)) {
+    ESP_LOGVV(TAG, "parse_header(): no service data UUID magic bytes.");
+    return {};
+  }
+
+  return result;
+}
+
+bool XiaomiMiscale2::parse_message(const std::vector<uint8_t> &message, ParseResult &result) {
+  // 2-3 Years (MISCALE 2 181B)
+  // 4 month (MISCALE 2 181B)
+  // 5 day (MISCALE 2 181B)
+  // 6 hour (MISCALE 2 181B)
+  // 7 minute (MISCALE 2 181B)
+  // 8 second (MISCALE 2 181B)
+  // 9-10 impedance (MISCALE 2 181B)
+  // 11-12 weight (MISCALE 2 181B)
+
+  const uint8_t *data = message.data();
+  const int data_length = 13;
+
+  if (message.size() != data_length) {
+    ESP_LOGVV(TAG, "parse_message(): payload has wrong size (%d)!", message.size());
+    return false;
+  }
+
+  bool is_Stabilized = ((data[1] & (1 << 5)) != 0) ? true : false;
+  bool loadRemoved = ((data[1] & (1 << 7)) != 0) ? true : false;
+
+  // weight, 2 bytes, 16-bit  unsigned integer, 1 kg
+  const int16_t weight = uint16_t(data[11]) | (uint16_t(data[12]) << 8);
+  if (data[0] == 0x02)
+    result.weight = weight * 0.01f / 2.0f;  // unit 'kg'
+  else if (data[0] == 0x03)
+    result.weight = weight * 0.01f * 0.453592;  // unit 'lbs'
+
+  // impedance, 2 bytes, 16-bit
+  const int16_t impedance = uint16_t(data[9]) | (uint16_t(data[10]) << 8);
+  result.impedance = impedance;
+
+  if (!is_Stabilized || loadRemoved || impedance == 0 || impedance >= 3000) {
+    return false;
+  }
+
+  return true;
+}
+
+bool XiaomiMiscale2::report_results(const optional<ParseResult> &result, const std::string &address) {
+  if (!result.has_value()) {
+    ESP_LOGVV(TAG, "report_results(): no results available.");
+    return false;
+  }
+
+  ESP_LOGD(TAG, "Got Xiaomi Miscale2 (%s):", address.c_str());
+
+  if (result->weight.has_value()) {
+    ESP_LOGD(TAG, "  Weight: %.2fkg", *result->weight);
+  }
+  if (result->impedance.has_value()) {
+    ESP_LOGD(TAG, "  Impedance: %.0fohm", *result->impedance);
+  }
+
+  return true;
+}
+
+}  // namespace xiaomi_miscale2
+}  // namespace esphome
+
+#endif